Heel cushion



FIG. 1 is a top view of a heel cushion showing our new design;

FIG. 2 is a bottom view of the heel cushion;

FIG. 3 is a front view of the heel cushion;

FIG. 4 is a rear view of the heel cushion;

FIG. 5 is a left side view of the heel cushion; and,

FIG. 6 is a right side view of the heel cushion.

The broken line showing of foot is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a heel cushion, as shown and described. 